Ryan Sarah M.

Sarah M. Ryan

Information about the author Sarah M. Ryan will soon be added to the site.
Found 9 papers in total
A Markov decision model to evaluate outsourcing in reverse logistics
A Markov decision model to evaluate outsourcing in reverse logistics
2007
One of the most important decisions regarding reverse logistics (RL) is whether to...
Optimal price and quantity of refurbished products
Optimal price and quantity of refurbished products
2006
Many retail product returns can be refurbished and resold, typically at a reduced...
Capacity expansion for random exponential demand growth with lead times
Capacity expansion for random exponential demand growth with lead times
2004
The combination of demand uncertainty and a lead time for adding capacity creates the...
Capacity expansion for a loss system with exponential demand growth
Capacity expansion for a loss system with exponential demand growth
2003
We study a loss system to forecast the demand for capacity based on the forecast...
Capacity expansion with lead times and autocorrelated random demand
Capacity expansion with lead times and autocorrelated random demand
2003
The combination of uncertain demand and lead times for installing capacity creates the...
Forecast frequency in rolling horizon hedging heuristics for capacity expansion
Forecast frequency in rolling horizon hedging heuristics for capacity expansion
1998
This paper describes a simulation study of the effect of forecast revisions and hedges...
A renewal reward approximation for the variance of electric power production costs
A renewal reward approximation for the variance of electric power production costs
1997
The cost of producing electric power over a specified study horizon is a random...
Chronological influences on the variance of electric power production costs
Chronological influences on the variance of electric power production costs
1992
The cost of producing electric power at a given time depends on the demand and the set...
Degeneracy in infinite horizon optimization
Degeneracy in infinite horizon optimization
1989
The authors consider sequential decision problems over an infinite horizon. The...
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